drm: updated DRM map patch for 32/64 bit systems
I basically combined Paul's patches with additions that I had made
for PCI scatter gather.
I also tried more carefully to avoid problems with the same token
assigned multiple times while trying to use the base address in the
token if possible to gain as much backward compatibility as possible
for broken DRI clients.
From: Paul Mackerras <paulus@samba.org> and Egbert Eich <eich@suse.de>
Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/drmP.h b/drivers/char/drm/drmP.h
index fb2af92..0a43589 100644
--- a/drivers/char/drm/drmP.h
+++ b/drivers/char/drm/drmP.h
@@ -539,6 +539,7 @@
typedef struct drm_map_list {
struct list_head head; /**< list head */
drm_map_t *map; /**< mapping */
+ unsigned int user_token;
} drm_map_list_t;
typedef drm_map_t drm_local_map_t;
@@ -759,6 +760,7 @@
struct drm_driver *driver;
drm_local_map_t *agp_buffer_map;
+ unsigned int agp_buffer_token;
drm_head_t primary; /**< primary screen head */
} drm_device_t;
@@ -1048,16 +1050,12 @@
drm_ioremapfree( map->handle, map->size, dev );
}
-static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev, unsigned long offset)
+static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev, unsigned int token)
{
- struct list_head *_list;
- list_for_each( _list, &dev->maplist->head ) {
- drm_map_list_t *_entry = list_entry( _list, drm_map_list_t, head );
- if ( _entry->map &&
- _entry->map->offset == offset ) {
+ drm_map_list_t *_entry;
+ list_for_each_entry(_entry, &dev->maplist->head, head)
+ if (_entry->user_token == token)
return _entry->map;
- }
- }
return NULL;
}
diff --git a/drivers/char/drm/drm_bufs.c b/drivers/char/drm/drm_bufs.c
index fcc8d24..d1e0b10 100644
--- a/drivers/char/drm/drm_bufs.c
+++ b/drivers/char/drm/drm_bufs.c
@@ -64,13 +64,41 @@
return NULL;
}
-#ifdef CONFIG_COMPAT
/*
- * Used to allocate 32-bit handles for _DRM_SHM regions
- * The 0x10000000 value is chosen to be out of the way of
- * FB/register and GART physical addresses.
+ * Used to allocate 32-bit handles for mappings.
*/
-static unsigned int map32_handle = 0x10000000;
+#define START_RANGE 0x10000000
+#define END_RANGE 0x40000000
+
+#ifdef _LP64
+static __inline__ unsigned int HandleID(unsigned long lhandle, drm_device_t *dev)
+{
+ static unsigned int map32_handle = START_RANGE;
+ unsigned int hash;
+
+ if (lhandle & 0xffffffff00000000) {
+ hash = map32_handle;
+ map32_handle += PAGE_SIZE;
+ if (map32_handle > END_RANGE)
+ map32_handle = START_RANGE;
+ } else
+ hash = lhandle;
+
+ while (1) {
+ drm_map_list_t *_entry;
+ list_for_each_entry(_entry, &dev->maplist->head,head) {
+ if (_entry->user_token == hash)
+ break;
+ }
+ if (&_entry->head == &dev->maplist->head)
+ return hash;
+
+ hash += PAGE_SIZE;
+ map32_handle += PAGE_SIZE;
+ }
+}
+#else
+# define HandleID(x,dev) (unsigned int)(x)
#endif
/**
@@ -198,7 +226,7 @@
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
return -EINVAL;
}
- map->offset += dev->sg->handle;
+ map->offset += (unsigned long)dev->sg->virtual;
break;
case _DRM_CONSISTENT:
/* dma_addr_t is 64bit on i386 with CONFIG_HIGHMEM64G,
@@ -229,12 +257,11 @@
down(&dev->struct_sem);
list_add(&list->head, &dev->maplist->head);
-#ifdef CONFIG_COMPAT
- /* Assign a 32-bit handle for _DRM_SHM mappings */
+ /* Assign a 32-bit handle */
/* We do it here so that dev->struct_sem protects the increment */
- if (map->type == _DRM_SHM)
- map->offset = map32_handle += PAGE_SIZE;
-#endif
+ list->user_token = HandleID(map->type==_DRM_SHM
+ ? (unsigned long)map->handle
+ : map->offset, dev);
up(&dev->struct_sem);
*map_ptr = map;
@@ -251,6 +278,7 @@
drm_map_t *map_ptr;
drm_map_t __user *argp = (void __user *)arg;
int err;
+ unsigned long handle = 0;
if (!(filp->f_mode & 3))
return -EACCES; /* Require read/write */
@@ -259,22 +287,29 @@
return -EFAULT;
}
- err = drm_addmap( dev, map.offset, map.size, map.type, map.flags,
- &map_ptr );
+ err = drm_addmap(dev, map.offset, map.size, map.type, map.flags,
+ &map_ptr);
if (err) {
return err;
}
- if (copy_to_user(argp, map_ptr, sizeof(*map_ptr)))
- return -EFAULT;
- if (map_ptr->type != _DRM_SHM) {
- if (copy_to_user(&argp->handle, &map_ptr->offset,
- sizeof(map_ptr->offset)))
+ {
+ drm_map_list_t *_entry;
+ list_for_each_entry(_entry, &dev->maplist->head, head) {
+ if (_entry->map == map_ptr)
+ handle = _entry->user_token;
+ }
+ if (!handle)
return -EFAULT;
}
+
+ if (copy_to_user(argp, map_ptr, sizeof(*map_ptr)))
+ return -EFAULT;
+ if (put_user(handle, &argp->handle))
+ return -EFAULT;
return 0;
-}
+ }
/**
@@ -388,7 +423,7 @@
drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
if (r_list->map &&
- r_list->map->handle == request.handle &&
+ r_list->user_token == (unsigned long) request.handle &&
r_list->map->flags & _DRM_REMOVABLE) {
map = r_list->map;
break;
@@ -939,7 +974,8 @@
buf->offset = (dma->byte_count + offset);
buf->bus_address = agp_offset + offset;
- buf->address = (void *)(agp_offset + offset + dev->sg->handle);
+ buf->address = (void *)(agp_offset + offset
+ + (unsigned long)dev->sg->virtual);
buf->next = NULL;
buf->waiting = 0;
buf->pending = 0;
@@ -1456,6 +1492,7 @@
|| (drm_core_check_feature(dev, DRIVER_FB_DMA)
&& (dma->flags & _DRM_DMA_USE_FB))) {
drm_map_t *map = dev->agp_buffer_map;
+ unsigned long token = dev->agp_buffer_token;
if ( !map ) {
retcode = -EINVAL;
@@ -1470,7 +1507,7 @@
virtual = do_mmap( filp, 0, map->size,
PROT_READ | PROT_WRITE,
MAP_SHARED,
- (unsigned long)map->offset );
+ token );
#if LINUX_VERSION_CODE <= 0x020402
up( ¤t->mm->mmap_sem );
#else
diff --git a/drivers/char/drm/drm_context.c b/drivers/char/drm/drm_context.c
index 5af46c9..f515567 100644
--- a/drivers/char/drm/drm_context.c
+++ b/drivers/char/drm/drm_context.c
@@ -212,6 +212,7 @@
drm_ctx_priv_map_t __user *argp = (void __user *)arg;
drm_ctx_priv_map_t request;
drm_map_t *map;
+ drm_map_list_t *_entry;
if (copy_from_user(&request, argp, sizeof(request)))
return -EFAULT;
@@ -225,7 +226,17 @@
map = dev->context_sareas[request.ctx_id];
up(&dev->struct_sem);
- request.handle = (void *) map->offset;
+ request.handle = 0;
+ list_for_each_entry(_entry, &dev->maplist->head,head) {
+ if (_entry->map == map) {
+ request.handle = (void *)(unsigned long)_entry->user_token;
+ break;
+ }
+ }
+ if (request.handle == 0)
+ return -EINVAL;
+
+
if (copy_to_user(argp, &request, sizeof(request)))
return -EFAULT;
return 0;
@@ -262,7 +273,7 @@
list_for_each(list, &dev->maplist->head) {
r_list = list_entry(list, drm_map_list_t, head);
if (r_list->map
- && r_list->map->offset == (unsigned long) request.handle)
+ && r_list->user_token == (unsigned long) request.handle)
goto found;
}
bad:
diff --git a/drivers/char/drm/drm_ioctl.c b/drivers/char/drm/drm_ioctl.c
index 39afda0..d2ed3ba 100644
--- a/drivers/char/drm/drm_ioctl.c
+++ b/drivers/char/drm/drm_ioctl.c
@@ -208,7 +208,7 @@
map.size = r_list->map->size;
map.type = r_list->map->type;
map.flags = r_list->map->flags;
- map.handle = r_list->map->handle;
+ map.handle = (void *)(unsigned long) r_list->user_token;
map.mtrr = r_list->map->mtrr;
up(&dev->struct_sem);
diff --git a/drivers/char/drm/drm_proc.c b/drivers/char/drm/drm_proc.c
index f4154cc..32d2bb9 100644
--- a/drivers/char/drm/drm_proc.c
+++ b/drivers/char/drm/drm_proc.c
@@ -235,13 +235,13 @@
type = "??";
else
type = types[map->type];
- DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08lx ",
+ DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08x ",
i,
map->offset,
map->size,
type,
map->flags,
- (unsigned long)map->handle);
+ r_list->user_token);
if (map->mtrr < 0) {
DRM_PROC_PRINT("none\n");
} else {
diff --git a/drivers/char/drm/drm_scatter.c b/drivers/char/drm/drm_scatter.c
index 54fddb6..ed267d4 100644
--- a/drivers/char/drm/drm_scatter.c
+++ b/drivers/char/drm/drm_scatter.c
@@ -61,6 +61,12 @@
DRM_MEM_SGLISTS );
}
+#ifdef _LP64
+# define ScatterHandle(x) (unsigned int)((x >> 32) + (x & ((1L << 32) - 1)))
+#else
+# define ScatterHandle(x) (unsigned int)(x)
+#endif
+
int drm_sg_alloc( struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg )
{
@@ -133,12 +139,13 @@
*/
memset( entry->virtual, 0, pages << PAGE_SHIFT );
- entry->handle = (unsigned long)entry->virtual;
+ entry->handle = ScatterHandle((unsigned long)entry->virtual);
DRM_DEBUG( "sg alloc handle = %08lx\n", entry->handle );
DRM_DEBUG( "sg alloc virtual = %p\n", entry->virtual );
- for ( i = entry->handle, j = 0 ; j < pages ; i += PAGE_SIZE, j++ ) {
+ for (i = (unsigned long)entry->virtual, j = 0; j < pages;
+ i += PAGE_SIZE, j++) {
entry->pagelist[j] = vmalloc_to_page((void *)i);
if (!entry->pagelist[j])
goto failed;
diff --git a/drivers/char/drm/drm_vm.c b/drivers/char/drm/drm_vm.c
index 675d239..99b5c86 100644
--- a/drivers/char/drm/drm_vm.c
+++ b/drivers/char/drm/drm_vm.c
@@ -73,12 +73,13 @@
r_list = list_entry(list, drm_map_list_t, head);
map = r_list->map;
if (!map) continue;
- if (map->offset == VM_OFFSET(vma)) break;
+ if (r_list->user_token == VM_OFFSET(vma))
+ break;
}
if (map && map->type == _DRM_AGP) {
unsigned long offset = address - vma->vm_start;
- unsigned long baddr = VM_OFFSET(vma) + offset;
+ unsigned long baddr = map->offset + offset;
struct drm_agp_mem *agpmem;
struct page *page;
@@ -304,7 +305,7 @@
offset = address - vma->vm_start;
- map_offset = map->offset - dev->sg->handle;
+ map_offset = map->offset - (unsigned long)dev->sg->virtual;
page_offset = (offset >> PAGE_SHIFT) + (map_offset >> PAGE_SHIFT);
page = entry->pagelist[page_offset];
get_page(page);
@@ -568,13 +569,12 @@
for performance, even if the list was a
bit longer. */
list_for_each(list, &dev->maplist->head) {
- unsigned long off;
r_list = list_entry(list, drm_map_list_t, head);
map = r_list->map;
if (!map) continue;
- off = dev->driver->get_map_ofs(map);
- if (off == VM_OFFSET(vma)) break;
+ if (r_list->user_token == VM_OFFSET(vma))
+ break;
}
if (!map || ((map->flags&_DRM_RESTRICTED) && !capable(CAP_SYS_ADMIN)))
@@ -613,7 +613,7 @@
/* fall through to _DRM_FRAME_BUFFER... */
case _DRM_FRAME_BUFFER:
case _DRM_REGISTERS:
- if (VM_OFFSET(vma) >= __pa(high_memory)) {
+ if (map->offset >= __pa(high_memory)) {
#if defined(__i386__) || defined(__x86_64__)
if (boot_cpu_data.x86 > 3 && map->type != _DRM_AGP) {
pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
@@ -636,12 +636,12 @@
offset = dev->driver->get_reg_ofs(dev);
#ifdef __sparc__
if (io_remap_pfn_range(DRM_RPR_ARG(vma) vma->vm_start,
- (VM_OFFSET(vma) + offset) >> PAGE_SHIFT,
+ (map->offset + offset) >> PAGE_SHIFT,
vma->vm_end - vma->vm_start,
vma->vm_page_prot))
#else
if (io_remap_pfn_range(vma, vma->vm_start,
- (VM_OFFSET(vma) + offset) >> PAGE_SHIFT,
+ (map->offset + offset) >> PAGE_SHIFT,
vma->vm_end - vma->vm_start,
vma->vm_page_prot))
#endif
@@ -649,7 +649,7 @@
DRM_DEBUG(" Type = %d; start = 0x%lx, end = 0x%lx,"
" offset = 0x%lx\n",
map->type,
- vma->vm_start, vma->vm_end, VM_OFFSET(vma) + offset);
+ vma->vm_start, vma->vm_end, map->offset + offset);
vma->vm_ops = &drm_vm_ops;
break;
case _DRM_SHM:
diff --git a/drivers/char/drm/ffb_drv.c b/drivers/char/drm/ffb_drv.c
index ec614ff..1bd0d55 100644
--- a/drivers/char/drm/ffb_drv.c
+++ b/drivers/char/drm/ffb_drv.c
@@ -152,14 +152,11 @@
return NULL;
list_for_each(list, &dev->maplist->head) {
- unsigned long uoff;
-
r_list = (drm_map_list_t *)list;
map = r_list->map;
if (!map)
continue;
- uoff = (map->offset & 0xffffffff);
- if (uoff == off)
+ if (r_list->user_token == off)
return map;
}
diff --git a/drivers/char/drm/i810_dma.c b/drivers/char/drm/i810_dma.c
index 0a9ac1f..f9fd5ab 100644
--- a/drivers/char/drm/i810_dma.c
+++ b/drivers/char/drm/i810_dma.c
@@ -351,6 +351,7 @@
DRM_ERROR("can not find mmio map!\n");
return -EINVAL;
}
+ dev->agp_buffer_token = init->buffers_offset;
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if (!dev->agp_buffer_map) {
dev->dev_private = (void *)dev_priv;
diff --git a/drivers/char/drm/i830_dma.c b/drivers/char/drm/i830_dma.c
index 80d8966..697cefc 100644
--- a/drivers/char/drm/i830_dma.c
+++ b/drivers/char/drm/i830_dma.c
@@ -358,6 +358,7 @@
DRM_ERROR("can not find mmio map!\n");
return -EINVAL;
}
+ dev->agp_buffer_token = init->buffers_offset;
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if(!dev->agp_buffer_map) {
dev->dev_private = (void *)dev_priv;
diff --git a/drivers/char/drm/mga_dma.c b/drivers/char/drm/mga_dma.c
index 7899e28..567b425 100644
--- a/drivers/char/drm/mga_dma.c
+++ b/drivers/char/drm/mga_dma.c
@@ -825,6 +825,7 @@
DRM_ERROR("failed to find primary dma region!\n");
return DRM_ERR(EINVAL);
}
+ dev->agp_buffer_token = init->buffers_offset;
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if (!dev->agp_buffer_map) {
DRM_ERROR("failed to find dma buffer region!\n");
diff --git a/drivers/char/drm/mga_drm.h b/drivers/char/drm/mga_drm.h
index 2d8aa79..d20aab3 100644
--- a/drivers/char/drm/mga_drm.h
+++ b/drivers/char/drm/mga_drm.h
@@ -312,7 +312,7 @@
* an IOMMU) is being used for "AGP" textures.
*/
/*@{*/
- drm_handle_t texture_handle; /**< Handle used to map AGP textures. */
+ unsigned long texture_handle; /**< Handle used to map AGP textures. */
uint32_t texture_size; /**< Size of the AGP texture region. */
/*@}*/
diff --git a/drivers/char/drm/mga_ioc32.c b/drivers/char/drm/mga_ioc32.c
index bc745cf..77d738e 100644
--- a/drivers/char/drm/mga_ioc32.c
+++ b/drivers/char/drm/mga_ioc32.c
@@ -129,9 +129,76 @@
DRM_IOCTL_MGA_GETPARAM, (unsigned long)getparam);
}
+typedef struct drm_mga_drm_bootstrap32 {
+ u32 texture_handle;
+ u32 texture_size;
+ u32 primary_size;
+ u32 secondary_bin_count;
+ u32 secondary_bin_size;
+ u32 agp_mode;
+ u8 agp_size;
+} drm_mga_dma_bootstrap32_t;
+
+static int compat_mga_dma_bootstrap(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ drm_mga_dma_bootstrap32_t dma_bootstrap32;
+ drm_mga_dma_bootstrap_t __user *dma_bootstrap;
+ int err;
+
+ if (copy_from_user(&dma_bootstrap32, (void __user *)arg,
+ sizeof(dma_bootstrap32)))
+ return -EFAULT;
+
+ dma_bootstrap = compat_alloc_user_space(sizeof(*dma_bootstrap));
+ if (!access_ok(VERIFY_WRITE, dma_bootstrap, sizeof(*dma_bootstrap))
+ || __put_user(dma_bootstrap32.texture_handle,
+ &dma_bootstrap->texture_handle)
+ || __put_user(dma_bootstrap32.texture_size,
+ &dma_bootstrap->texture_size)
+ || __put_user(dma_bootstrap32.primary_size,
+ &dma_bootstrap->primary_size)
+ || __put_user(dma_bootstrap32.secondary_bin_count,
+ &dma_bootstrap->secondary_bin_count)
+ || __put_user(dma_bootstrap32.secondary_bin_size,
+ &dma_bootstrap->secondary_bin_size)
+ || __put_user(dma_bootstrap32.agp_mode, &dma_bootstrap->agp_mode)
+ || __put_user(dma_bootstrap32.agp_size, &dma_bootstrap->agp_size))
+ return -EFAULT;
+
+ err = drm_ioctl(file->f_dentry->d_inode, file,
+ DRM_IOCTL_MGA_DMA_BOOTSTRAP,
+ (unsigned long)dma_bootstrap);
+ if (err)
+ return err;
+
+ if (__get_user(dma_bootstrap32.texture_handle,
+ &dma_bootstrap->texture_handle)
+ || __get_user(dma_bootstrap32.texture_size,
+ &dma_bootstrap->texture_size)
+ || __get_user(dma_bootstrap32.primary_size,
+ &dma_bootstrap->primary_size)
+ || __get_user(dma_bootstrap32.secondary_bin_count,
+ &dma_bootstrap->secondary_bin_count)
+ || __get_user(dma_bootstrap32.secondary_bin_size,
+ &dma_bootstrap->secondary_bin_size)
+ || __get_user(dma_bootstrap32.agp_mode,
+ &dma_bootstrap->agp_mode)
+ || __get_user(dma_bootstrap32.agp_size,
+ &dma_bootstrap->agp_size))
+ return -EFAULT;
+
+ if (copy_to_user((void __user *)arg, &dma_bootstrap32,
+ sizeof(dma_bootstrap32)))
+ return -EFAULT;
+
+ return 0;
+}
+
drm_ioctl_compat_t *mga_compat_ioctls[] = {
[DRM_MGA_INIT] = compat_mga_init,
[DRM_MGA_GETPARAM] = compat_mga_getparam,
+ [DRM_MGA_DMA_BOOTSTRAP] = compat_mga_dma_bootstrap,
};
/**
diff --git a/drivers/char/drm/r128_cce.c b/drivers/char/drm/r128_cce.c
index 08ed8d0..8951522 100644
--- a/drivers/char/drm/r128_cce.c
+++ b/drivers/char/drm/r128_cce.c
@@ -326,7 +326,8 @@
ring_start = dev_priv->cce_ring->offset - dev->agp->base;
else
#endif
- ring_start = dev_priv->cce_ring->offset - dev->sg->handle;
+ ring_start = dev_priv->cce_ring->offset -
+ (unsigned long)dev->sg->virtual;
R128_WRITE( R128_PM4_BUFFER_OFFSET, ring_start | R128_AGP_OFFSET );
@@ -487,6 +488,7 @@
r128_do_cleanup_cce( dev );
return DRM_ERR(EINVAL);
}
+ dev->agp_buffer_token = init->buffers_offset;
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if(!dev->agp_buffer_map) {
DRM_ERROR("could not find dma buffer region!\n");
@@ -537,7 +539,7 @@
dev_priv->cce_buffers_offset = dev->agp->base;
else
#endif
- dev_priv->cce_buffers_offset = dev->sg->handle;
+ dev_priv->cce_buffers_offset = (unsigned long)dev->sg->virtual;
dev_priv->ring.start = (u32 *)dev_priv->cce_ring->handle;
dev_priv->ring.end = ((u32 *)dev_priv->cce_ring->handle
diff --git a/drivers/char/drm/radeon_cp.c b/drivers/char/drm/radeon_cp.c
index 8255cc6..f24a27c 100644
--- a/drivers/char/drm/radeon_cp.c
+++ b/drivers/char/drm/radeon_cp.c
@@ -1407,6 +1407,7 @@
radeon_do_cleanup_cp(dev);
return DRM_ERR(EINVAL);
}
+ dev->agp_buffer_token = init->buffers_offset;
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if(!dev->agp_buffer_map) {
DRM_ERROR("could not find dma buffer region!\n");